Thanks Jim for the reply yeah I have to Motorola Micor and a Motorola quantar they have the same setup as you're talking about but one of them is a six cavitity T1500 and the other a six cavity which should supply even more isolation between the two.
Yes.
Motorola UHF community repeaters were done this way for years
configured the following way:
- 500 MHz or more spacing between transmit frequencies
- 4 cavity Bandpass duplexers on each repeater
- DUAL circulator/isolator on the output of each transmitter
between the duplexer and transmitter
- Proper cable lengths between the output of each duplexer to
the common shared antenna
Worked great with minimal losses and no desensce. If you look at
the spec sheet for the T1500 series of duplexer, you may find the
cable information in that document for doing just this. A UHF 50
ohm antenna combiner/splitter would do the same thing of combining
the outputs of each duplexer.
73, Jim W7RY
On 11/16/2022 9:11 AM, Keith Ford
wrote:
can I put two UHF repeaters on the same antenna by
putting some filtering in between them one is in business band
and the other one is amateur radio band. Just reaching out there
in a group has anybody ever done this before I've got one
antenna that is damaged it appears to have water in it and the
SWR is high.
thanks.
KF4RGR? ? ? ?Keith Ford
--
Thanks and 73, Jim W7RY
